Terekhov S. Defining the basic parameters of heat and mass transfer in mixtures, solutions and alloys using the continuously-latticed model of matter.

The necessity for development of the continuously-latticed approach to researching substances, their mixtures, solutions and alloys (multicomponent systems) has been shown for the first time by the present dissertation; the new physically grounded assumptions about morphology of the multicomponent systems aimed at integration of different models into a single theoretical construction have been enunciated; the single method of research into thermal and kinetic properties of the multicomponent systems has been worked out. A new expression of free energy of the system, integrating the types of free energy for the continued and latticed models, has been devised. On the basis of the Onsager theory within the framework of the explored model, the equations of evolution of the multicomponent system in the diffusive proximity have been deduced and, on their basis the influence of the particles' microscopic properties upon solutions' metastability limits have been deduced. Concentration dependence of the coefficient of mutual diffusion is identified for the binary systems at presence or absence of vacancies. It has been proved that when few equilibrium vacancies are present in the diffusive zone of the system, each component's plastic motion has its individual speed. Competition between the Kirkendall-Smigelskas effect and the vacancy effects of Frenkel, given that non-equilibrium vacancies are present in the system, has been identified.